1.5

Question 1

Front Frame Location

Answer 1

Front of compressor section

Question 2

Front Frame Description

Answer 2

Welded steel ring that houses inlet guide vanes

Question 3

Inlet Guide vanes

Answer 3

hollow to allow for hot air from engine to circulate through the vanes to prevent ice from forming
also provides lubrications oil to and from main bearing

Question 4

Air Inlet Duct

Answer 4

Preswirls front frame in direction of rotation of engine compressor rotor to prevent shock

Question 5

Compressor section Location

Answer 5

Between front frame and combustion section

Question 6

Compressor consist of

Answer 6

Casing, rotor assembly, stator assembly, exit guide vane assembly, and diffuser

Question 7

Compressor Section main purpose

Answer 7

supplies air in sufficient quanitities to satisfy the requirements of the combustion section

Question 8

Compressor section purpose,cont.

Answer 8

Heating/as
cabin pressurization
cooling of engine cavities
pressurization of fuel cells and transfer of fuelk
anti-icing
oil seal pressurization

Question 9

Compressor section os of the axial flow type

Answer 9

Compressor section os of the axial flow type

Question 10

axial flow compressor

Answer 10

compresses air in direction that is parallel to axis of engine

Question 11

axial flow compressor consists

Answer 11

alternating series of rotating airfoils(blads) and stationary airfoils(stator vanes)

Question 12

axial flow compressor casing

Answer 12

houses the stator assemblies

provides mountaing pads for accessories and bleed air ports.

Question 13

axial flow compressor rotor assembly consist of

Answer 13

Shaft, disks, blades
blades are attached to compressor disk by dove tail, bulb, or fir tree root. locked in place by peening pins locking wires or keys

Question 14

axial flow compressor rotor assembly blades are made of

Answer 14

stainless steel, aluminum, or titanium

Question 15

axial flow compressor stator assembly consist of

Answer 15

stationary vanes dove-tailed into split0rings and mounted to compressor casing.

Question 16

axial flow compressor stator assembly banes are made from

Answer 16

aluminum titatnium or staineless steel

Question 17

exit guide vanes location

Answer 17

at compressor exit

Question 18

exit guide vanes are

Answer 18

stationary vanes that straighten air to eliminate turbulence

Question 19

diffuser located

Answer 19

part of compressor section

Question 20

diffuser forms

Answer 20

the compressor rear frame

Question 21

diffuser develops

Answer 21

a pressure wall to prevent reverse flow of combustion gases back into compressor

Question 22

high pressure point

Answer 22

diffuser

Question 23

types of axial flow compressor

Answer 23

single and dual

Question 24

advantage of axial flow compressor(compared to centrifugal cflow compressor)

Answer 24

high peak efficiencies

small frontal area

Question 25

disadvantage of axial flow compressor

Answer 25

heavy difficult to manufacturer high starting power requirements

Question 26

Combustion section location

Answer 26

between compressor and turbine

Question 27

Combustion section purpose

Answer 27

to burn the fuel/air mixture, adding heat energy to mass airflow

Question 28

combustion section components

Answer 28

``` Casing chambers ignitor plugs fuel nozzles fuel drain ```

Question 29

Type of fuel nozzles

Answer 29

Duplex and simplex

Question 30

fuel drain

Answer 30

located at bottom of combustion casing. drains residual fuel

Question 31

Type of combustion chambers

Answer 31

Annular and can-annular

Question 32

Annular

Answer 32

limited area,1 chamber

Question 33

can-annular

Answer 33

mulitble chambers

Question 34

Turbine section locationg

Answer 34

between combustion and exhaust

Question 35

Turbine purpose

Answer 35

extract energy from expanding gases from combustion section and xonvert gases to shaft horsepower

Question 36

turbine energy determined by

Answer 36

compressor size, number of engine driven accessories, reduction gearboxes to drive propellars, rotary airfois driven by shafts

Question 37

Trubine section components

Answer 37

Casing Nozzles assemblies turbine rotar assembly

Question 38

Types of turbine blades

Answer 38

impulse - light reaction - medium impulse reaction - heavy

Question 39

Exhaust section location

Answer 39

Aft of turbine section

Question 40

Exhaust section purpose

Answer 40

collect exhaust gases and deliver them to exhaust nozzles mounting for thermocouplings' provide mounting for struts

Question 41

Exhaust section inner cone

Answer 41

prevents turbulence and allows gases to come together to form a solid jet stream

Question 42

Tailpipe

Answer 42

used to carry exhaust gases away from airframe(apart of aircraft not engine)

Question 43

exhaust nozzles purpose

Answer 43

impart final boost in velocity to gases leaving engine(provide thrust)

Question 44

thermocouples location

Answer 44

forward, aft or between turbine stages

Question 45

thermocouples purpose

Answer 45

monitor termp throughout system

Question 46

Insulation blankets

Answer 46

protect airframe from heat

Question 47

Power Take Off location

Answer 47

center front of compressor hub

Question 48

Power take off purpose

Answer 48

change compressor rotor speeds suitable drive speeds